Acharya Vaani
shrImadAnandatIrthArya mukhanissR^itaM
doShA anAdisambaddhAste muktiparipanthinaH |
santyeva prAyashaH puMssu tena moxo na jAyate || A.V 3.3.31
Eventhough eligible for liberation, all moxa yogyAs do not immediately get liberated because of the absence of the Lord’s Grace. But why there is no grace of Lord? It is because of lack of knowledge. That is again because of the lack of dhyAna and abhyAsa which in turn is because of the lack of shravaNa. But why one fails to do shravaNa? It is because of the doShAs(absence of viShNu bhakti etc) which are associated with all jIva’s from beginning-less time. These doShAs are the obstacles for the liberation.